Question: What railway tunnel that ends at Erstfeld starts with letter B ?
Paraphrase: What railway tunnel that ends at Erstfeld begins with letter B ?
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q1311958 . ?sbj wdt:P559 wd:Q69642 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'b')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25